This is a good writeup in general, but it fails to mention the fact that under glibc, POSIX AIO is implemented with a thread pool anyway. Only native (non-port

This is a good writeup in general, but it fails to mention the fact that under glibc, POSIX AIO is implemented with a thread pool anyway. Only native (non-portable) Linux AIO is implemented by the kernel. In general, unless you're doing something super high-performance, you should not bother with AIO. It's kind of one of those "if you have to ask, you don't need to know," situations.